Rotary engine



A ril 25, 1933. E. E. GALYEAN ROTARY ENGINE Filed Au 24, 1931 2 Sheets-Sheet 2 INVENTOR. ilmerflagyew BY d p A TT NEY.

, Patented Apr. 25, 1933 UNITED STATES PATENT OFFICE m E. GALYEAN, F TOPEKA, KANSAS ROTARY ENGINE Application filed August 24, 1931. Serial No. 558,863.

This invention relates to internal combusof the casing have likeinternal cam grooves 8 tion rotary engines, and has for its object to of generall elliptic form flattened at one produce an efiicient engine of the class menside to provide thrust shoulders 9, the grooves tioned in which provision is made for deveiextending around the axis of the cylinder,

opin a plurality of power impulses in each and said grooves coincide with slots lOa pro- 60 revo ution, and which is of simple, compact vided for cooling purposes. and economical construction. The rotor or piston is constructed as fol- With the general object named in view lows: 11 are similar ring-shaped sides or and others as will hereinafter appear, the heads provided with diametric cross-bars 12 invention consists in certain novel and usecentrally pierced to fit on the shaft and be 55 ful features of construction and combinakeyed or splined thereon, there being hubs tions of parts as hereinafter described and 13 at the inner sides to provide a strong and claimed; and in order that it may be fully serviceable connection with the shaft. Conunderstood, reference is to be had to the centrically of the shaft and between and boltaccompanying drawings, in which ed firmly to the heads 11 is the cylindrical 60 Figure 1 is a view partly in side elevation body-portion 14 of the rotor or double pisand partly in central vertical section. ton. Peripherally it is of double-stepped Figure 2 is a vertical cross-section of a form to provide diametrically opposite outrotary engine embodying the invention on er segments 15 of diameter to closely fit the the line IIII of Figure 1. inner wall of the cylinder 4, diametrically- 5 Figure 3 is an irregular vertical section on opposite inner segments 16, and diametrithe line III-III of Figure 2. cal y opposite intermediate segments 17, the

Figure 4 is a fragmentary exterior side inner and intermediate segments conjointview of one of the sides of the engine cas- 1y spanning the spaces between the outer 5 in% segments, and providing connected'external 70 igure 5 is a broken side view of the rodeep chambers 18 and shallow chambers 19, ta piston of the engine. the front walls of the chamber 18 constitutl i re 6 is a fragmentary section on th ing the piston faces 20 against which the li VI of Figure 3. forces of explosion are successively applied Referring to the drawings in detail, 1 inin each revolution. Followers or abutments 7 dicates a horizontal rectangular frame profor effecting compression of the charges of vided with corner supporting standards 1a, combustible mixture and serving as rigid or and equipped with side bearings 2 for the unyielding abutments or resistances at the shaft 3 for the transfer of power by conven- "moments of explosion, comprise heads 21 a5 tional mechanism, such as a pulley and belt, fitting in chambers 18,tails 22 fitting in cham- 50 r not shown,'or an equivalent thereof. bers 19, and push rods 23 projecting rear- The casing of the engine comprising a cylwardly from the heads 21 and extending inder 4 havm opposite-arms 5 fitted within through guide openings 24 inthe rotorl'at and upon the ame 1 and bolted or otherwise the junctions or connectionsof segments 16 40 secured thereto, and a pair of circular sides and 17. The rear ends of therodsare con- 85 or heads 6 bolted as at 7 to the cylinder. The nected to the outer ends of crank-arms25 pivlatter has a combustion chamber 0 into which otally mounted on the shaft. i 1 projects a spark- In S or equivalent igni- Each crank armis pivotally engaged by tion device. It a o as al fias intake port I- the rear end of a toggle'and the front end of V and an exhaust port E. e sides or heads the toggle is pivotally connected to a pair,

of cars 26 projecting inwardly from the rotor, the links 27 and 28 of the toggle being equipped at their pivotal points with rollers 29 engaging the cam grooves of the heads of the casing.

The rotor is adapted for operation in a counter-clockwise direction, and when one follower or abutment has been caused by the shortening of its toggle connection to closely approach its opposing piston face to compress a charge of combustible mixture therein, theother toggle has been expanded to relatively withdraw its follower or abutment. As the parts attain the positions mentioned and clearly shown by Figure 3, the rollers of the shortened toggle are engaging the shoulders 9 of the cam grooves, and at the same time a spark is adapted to be produced within the combustion chamber by the spark plug. The resultin explosion expends its force on the piston face to drive the rotor as the reaction force on the follower or abutment meets unyielding resistance because of the engagement of the respective rollers with the shoulders 9. At the same time the other chamber 18 is in communication with the in take port as the corresponding or respective .follower or abutment remains practically fully withdrawn and due to the position of its toggle rollers in the cam grooves, the chamber is fully charged with combustible mixture preferably supplied by the intake port under pressure in any conventional man ner. The continued operation of the rotor brings the chamber where the explosion occurred into communication with the exhaust port E for the expulsion of the dead gases and at the same time a relative withdrawal of the respective follower disposes it in its chamber for receiving a charge of fresh combustible mixture as it passes the intake port, the other follower at the same time being accelerated in motion due to the cam grooves and toggle, to effect compression of the charge in itsrespective chamber and at the end of ahalf revolution of the motor attain the firing position as the other chamber 18 begins its recharging operation.

It will thus be seen that there are two explosions in each revolution of the shaft, and that the reaction in each case is against an unyielding resistance so that the full force of the explosion minus loss from frictional resistance, is expended in the operation of the rotor.

It is to be understood, of course, that packing rings or the like will be employed to I guard against loss of power by leakage, but

as the necessity for packings to seal the combustion chambers is obvious and can be supplied without invention, they have been omitted from the drawings.

From the above description it will be apparent that I have produced a construction embodying all of the features of advantage opposite external peripheral chambers set forth as desirable, and while I have described and claimed the preferred embodiment of the invention, I reserve the right to make all changes properly falling within the spirit and scope of the appended claims.

I claim 1. A rotary engine, comprising a stationary casing providing a circular chamber and having gas-intake and exhaust ports and continuous cam grooves in the inner faces of the side walls, a shaft journaled in the side walls coaxially thereof and eccentrically of said grooves, a rotor of cylinder sha e and open at its sides, mounted on the sha t within the said chamber and engaging the circumferential and side walls thereof and having opposite external peripheral chambers providing piston faces at their front ends, the bottoms of said peripheral chambers bein of step form to divide the chambers into front and rear portions of different depth, the front portions being deeper than the rear portions and constituting follower chambers, the risers of'the said stepped portions having passages opening from the front parts of said rotor chambers into the casing chamber, independent arms pivotally mounted at their inner ends on the shaft, followers snugly engaging the front parts of the rotor chambers and provided with tail pieces extending into the shallow rear chambers, rods projecting rearwardly from the followers and through the said passages and secured to said arms, toggle connections between said arms respectively and the rotor, and rollers on and at opposite sides of the jointed parts of the tog gles and engaging the said cam grooves.

2.-A rotary engine, comprising a stationary casing providing acircular chamber and having gas-intake and exhaust ports and continuous cam grooves in the inner faces of the side walls, a shaft journaled in the side walls coaxially thereof and eccentrically of said grooves, a rotor of cylinder shape and open at its sides, mounted on the shaft within the said chamber and engaging the circumferential and side walls thereof and having providing piston faces at their front ends, the bottoms of said peripheral chambers being of step form to divide the chambers into front and rear portions of different depth, the front portions being deeper than the rear portions and constituting follower chambers, the risers of the said stepped portions having passages opening from the front parts of said rotor chambers into the casing chamber, independent arms pivotally mounted at their inner ends on the shaft, followers, snugly engaging the front parts of the rotor cham bers and provided with tail pieces extending into the shallow rear chambers, rods projecting rearwardly from the followers and through the said passages and secured to the arms, toggle connections between said arms respectively and the rotor, and rollers on and at opposite sides of the jointed parts of the toggles and engaging the said cam grooves, the cam grooves including straight forwardly-facing portions engaged by said rollers respectively, when the toggles are contracted with the respec ive follower in full mixturecompressing position.

In testimony whereof I afiix rfi sianature. ELMER E. G AN. 

